气候变化领域集成服务门户(CCPortal): Accumulation of Proline in Plants under Contaminated Soils-Are We on the Same Page?

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DOI	10.3390/antiox12030666
	Accumulation of Proline in Plants under Contaminated Soils-Are We on the Same Page?
	Spormann, Sofia; Nadais, Pedro; Sousa, Filipa; Pinto, Mafalda; Martins, Maria; Sousa, Bruno; Fidalgo, Fernanda; Soares, Cristiano
发表日期	2023
EISSN	2076-3921
卷号	12 期号:3
英文摘要	Agricultural soil degradation is occurring at unprecedented rates, not only as an indirect effect of climate change (CC) but also due to intensified agricultural practices which affect soil properties and biodiversity. Therefore, understanding the impacts of CC and soil degradation on plant physiology is crucial for the sustainable development of mitigation strategies to prevent crop productivity losses. The amino acid proline has long been recognized for playing distinct roles in plant cells undergoing osmotic stress. Due to its osmoprotectant and redox-buffering ability, a positive correlation between proline accumulation and plants' tolerance to abiotic stress has been pointed out in numerous reviews. Indeed, proline quantification is used systematically by plant physiologists as an indicator of the degree of tolerance and a measurement of the antioxidant potential in plants under stressful conditions. Moreover, the exogenous application of proline has been shown to increase resilience to several stress factors, including those related to soil degradation such as salinity and exposure to metals and xenobiotics. However, recent data from several studies often refer to proline accumulation as a signal of stress sensitivity with no clear correlation with improved antioxidant activity or higher stress tolerance, including when proline is used exogenously as a stress reliever. Nevertheless, endogenous proline levels are strongly modified by these stresses, proving its involvement in plant responses. Hence, one main question arises-is proline augmentation always a sign of improved stress resilience? From this perspective, the present review aims to provide a more comprehensive understanding of the implications of proline accumulation in plants under abiotic stress induced by soil degradation factors, reinforcing the idea that proline quantification should not be employed as a sole indicator of stress sensitivity or resilience but rather complemented with further biochemical and physiological endpoints.
英文关键词	oxidative stress; redox homeostasis; antioxidants; soil erosion; abiotic stress; salinity; metals; xenobiotics
语种	英语
WOS研究方向	Biochemistry & Molecular Biology ; Chemistry, Medicinal ; Food Science & Technology
WOS类目	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000957325200001
来源期刊	ANTIOXIDANTS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/281560
作者单位	Universidade do Porto; Universidade do Porto
推荐引用方式 GB/T 7714	Spormann, Sofia,Nadais, Pedro,Sousa, Filipa,et al. Accumulation of Proline in Plants under Contaminated Soils-Are We on the Same Page?[J],2023,12(3).
APA	Spormann, Sofia.,Nadais, Pedro.,Sousa, Filipa.,Pinto, Mafalda.,Martins, Maria.,...&Soares, Cristiano.(2023).Accumulation of Proline in Plants under Contaminated Soils-Are We on the Same Page?.ANTIOXIDANTS,12(3).
MLA	Spormann, Sofia,et al."Accumulation of Proline in Plants under Contaminated Soils-Are We on the Same Page?".ANTIOXIDANTS 12.3(2023).